/*
Bullet Continuous Collision Detection and Physics Library
Copyright (c) 2003-2008 Erwin Coumans  http://continuousphysics.com/Bullet/

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it freely,
subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/

#ifndef SOFT_BODY_HELPERS_H
#define SOFT_BODY_HELPERS_H

#include "btSoftBody.h"

//
// Helpers
//

/* fDrawFlags                                                            */
struct    fDrawFlags { enum _ {
    Nodes        =    0x0001,
    Links        =    0x0002,
    Faces        =    0x0004,
    Tetras        =    0x0008,
    Normals        =    0x0010,
    Contacts    =    0x0020,
    Anchors        =    0x0040,
    Notes        =    0x0080,
    Clusters    =    0x0100,
    NodeTree    =    0x0200,
    FaceTree    =    0x0400,
    ClusterTree    =    0x0800,
    Joints        =    0x1000,
    /* presets    */
    Std            =    Links+Faces+Tetras+Anchors+Notes+Joints,
    StdTetra    =    Std-Faces+Tetras
};};

struct    btSoftBodyHelpers
{
    /* Draw body                                                            */
    static void                Draw(        btSoftBody* psb,
        btIDebugDraw* idraw,
        int drawflags=fDrawFlags::Std);
    /* Draw body infos                                                        */
    static    void            DrawInfos(    btSoftBody* psb,
        btIDebugDraw* idraw,
        bool masses,
        bool areas,
        bool stress);
    /* Draw node tree                                                        */
    static void                DrawNodeTree(    btSoftBody* psb,
        btIDebugDraw* idraw,
        int mindepth=0,
        int maxdepth=-1);
    /* Draw face tree                                                        */
    static void                DrawFaceTree(    btSoftBody* psb,
        btIDebugDraw* idraw,
        int mindepth=0,
        int maxdepth=-1);
    /* Draw cluster tree                                                    */
    static void                DrawClusterTree(btSoftBody* psb,
        btIDebugDraw* idraw,
        int mindepth=0,
        int maxdepth=-1);
    /* Draw rigid frame                                                        */
    static    void            DrawFrame(        btSoftBody* psb,
        btIDebugDraw* idraw);
    /* Create a rope                                                        */
    static    btSoftBody*        CreateRope( btSoftBodyWorldInfo& worldInfo,
        const btVector3& from,
        const btVector3& to,
        int res,
        int fixeds);
    /* Create a patch                                                        */
    static    btSoftBody*        CreatePatch(btSoftBodyWorldInfo& worldInfo,
        const btVector3& corner00,
        const btVector3& corner10,
        const btVector3& corner01,
        const btVector3& corner11,
        int resx,
        int resy,
        int fixeds,
        bool gendiags);
    /* Create a patch with UV Texture Coordinates    */
    static    btSoftBody*        CreatePatchUV(btSoftBodyWorldInfo& worldInfo,
        const btVector3& corner00,
        const btVector3& corner10,
        const btVector3& corner01,
        const btVector3& corner11,
        int resx,
        int resy,
        int fixeds,
        bool gendiags,
        float* tex_coords=0);
    static    float    CalculateUV(int resx,int resy,int ix,int iy,int id);
    /* Create an ellipsoid                                                    */
    static    btSoftBody*        CreateEllipsoid(btSoftBodyWorldInfo& worldInfo,
        const btVector3& center,
        const btVector3& radius,
        int res);
    /* Create from trimesh                                                    */
    static    btSoftBody*        CreateFromTriMesh(    btSoftBodyWorldInfo& worldInfo,
        const btScalar*    vertices,
        const int* triangles,
        int ntriangles);
    /* Create from convex-hull                                                */
    static    btSoftBody*        CreateFromConvexHull(    btSoftBodyWorldInfo& worldInfo,
        const btVector3* vertices,
        int nvertices);
};

#endif //SOFT_BODY_HELPERS_H
